<span layout="row" layout-align="center center">
    <md-button class="icon-btn"
               ng-click="viewTypeChanged('table')"
               ng-class="{'selected' : viewType == 'table'}">
        <ng-md-icon md-icon icon="list"></ng-md-icon>
    </md-button>
    <md-button class="icon-btn"
               ng-click="viewTypeChanged('list')"
               ng-class="{'selected' : viewType == 'list'}">
        <ng-md-icon md-icon icon="view_list"></ng-md-icon>
    </md-button>
</span>
